Laser marking machine 1.Water cooling system 2.Diode pump laser 3.Mark on metal, plastic,rubber products 4.CNC ... ionized water, distilled water or purified water.•Feature:1. Diode pumped laser marking machine adopts high-quality semi-conductor module, life time over ... industry, jewelry, glasses, auto parts, telecommunications products, plastic buttons etc. Diode pump laser marking machine with CE